大厚度黄土地区夯扩桩承载力研究

EXPERIMENTAL INVESTIGATION ON BEARING CAPACITY OF RAM-COMPACTION PILES IN THE SITE OF LOESS WITH BIG THICKNESS

夯扩桩具有单桩承载力较高、沉降较小等优点,在经济上也优于普通灌注桩体。为了说明夯扩桩在大厚度湿陷性黄土地区良好的承载性能,文中以某地区学生公寓楼工程为例,对夯扩桩的承载能力进行了试验研究。结果表明,试验桩具有较高的承载力,而且沉降较为均匀、沉降量小,可以作为承受较大荷载的建筑物的基础。

Ram-compaction piles have advantages of high bearing capacity, smaller settlement, and smaller engineering cost compared with other normal grouting piles. In order to explain the good bearing capacity of ram-compaction piles in the site of loess with big thickness, building as an example, the test for the bearing capacity of ran-compaction taking a Students＂ apartment piles is carried out. The tes- ting results show that the ram-compaction piles not only have higher bearing capacity, but also less have uniform and small settlement. The ram-compaction piles can be used as foundation of building with big load.